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home > Cal Test CT2700 40 kV High Voltage DMM Probe > Cal Test CT2700 40 kV High Voltage DMM Probe

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Cal Test CT2700 40 kV High Voltage DMM ProbeCal Test CT2700 40 kV High Voltage DMM Probe Key Features At A Glance Maximum input voltage of 40 kV (DC + AC peak) or 28 kVrms AC verify rating matches the intended measurement before connecting 1000: 1 voltage division ratio a 1,000 V input reads as 1 V on the connected DMM DC accuracy of 1% below 20 kV and 3% from 20 kV to 40 kV (0. 5% when used with a 10 M input impedance DMM) AC accuracy of 5% at 60 Hz across the 1 to 28 kV range 1000 M input

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Cal Test CT2700 40 kV High Voltage DMM Probe

Name: Cal Test CT2700 40 kV High Voltage DMM Probe
Brand: terrelite.it
SKU: 98629621436
Price: 107.05 USD
Availability: InStock
Rating: 4.5814 (570 reviews)

Key Features At A Glance

Maximum input voltage of 40 kV (DC + AC peak) or 28 kVrms AC — verify rating matches the intended measurement before connecting
1000:1 voltage division ratio — a 1,000 V input reads as 1 V on the connected DMM
DC accuracy of ±1% below 20 kV and ±3% from 20 kV to 40 kV (≤0.5% when used with a 10 MΩ input impedance DMM)
AC accuracy of 5% at 60 Hz across the 1 to 28 kV range
1000 MΩ input resistance with bandwidth of 300 Hz (-3 dB)
Retractable-sleeve 4 mm sheathed banana plug output for connection to standard DMMs
Meets IEC 61010-031 CAT I safety standard
Temperature coefficient of ≤200 ppm/°C after 15-minute stabilization

The Cal Test Electronics CT2700 is a high voltage DMM probe that extends the measurement range of a standard digital multimeter to voltages up to 40 kV DC (or 28 kVrms AC). Using a precision 1000:1 voltage divider, the probe scales high voltage inputs down to a level a standard meter can safely read — a 1,000 V input reads as 1 V on the DMM. Output is provided through 4 mm sheathed banana plugs designed to connect to any DMM with a minimum 10 MΩ input impedance.

The CT2700 is intended for high voltage measurement applications where a standard DMM lacks sufficient input range. With its 1000 MΩ input resistance and 300 Hz bandwidth, it is suited to DC and low-frequency AC voltage measurement on high voltage power supplies, transformers, and similar equipment. The retractable sheathed banana plug design and IEC 61010-031 CAT I rating reflect its intended use as a measurement accessory in controlled bench and lab environments.

Brand Heritage

Cal Test Electronics is a US-based manufacturer of test and measurement accessories, including test leads, probes, and adapters used across electronics labs, service environments, and educational programs.

Product Core & Specifications

Electrical Specifications
Maximum Input Voltage (CAT I)	40 kV (DC+Peak AC) 28 kVrms AC
Division Ratio	1000:1
Bandwidth	300 Hz (-3 dB)
Temperature Coefficient	≤200 ppm/°C
Input Resistance	1000 MΩ
DC Volts Accuracy	±1% (<20 kV) ±3% (20 kV to 40 kV) ≤0.5% (with 10 MΩ input impedance DMM only)
AC Volts Accuracy	5% at 60 Hz (1 to 28 kV)
Maximum Loading Current	≤40 µA (at 40 kV DC)
Maximum Loading Power	≤1.6 W
Source Impedance	10 MΩ
Mechanical Characteristics
Dimensions (Length x Diameter)	340 x 80 mm
Cable Length	3.3 ft (1 m)
Weight	0.66 lbs (300 g)
Environmental Characteristics
Designed for Use in	Pollution Degree 2
Operating Environment	32°F to 122°F (0°C to 50°C)
Storage Temperature	-4°F to 158°F (-20°C to 70°C)
Humidity	≤80% relative humidity at 104°F (40°C)
Safety Specifications
Safety Standard	IEC 61010-031 CAT I

Important: Requires a DMM with a minimum 10 MΩ input impedance. Maximum input: 40 kV (DC + AC peak) or 28 kVrms AC.Important: All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 25 °C ± 5 °C.Important: DC Volts Accuracy of ≤0.5% is achievable only when used with a DMM having 10 MΩ input impedance.Important: Rated CAT I per IEC 61010-031; not for use on CAT II/III/IV measurement circuits.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.